Internal-combustion engine.



l. A. TOOMEY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED NOV. 2. I915.

1,250,715. Patented 1m 18,1917.

Yr 7 w 14 33 I ll 4 j) z w E 3: 1 a, an z UNITED STATES 1 JOHN A. TOOMEY, O]? LOS ANGELES, CALIFORNIA.

mrman-comnusrroii' moms.

To all whom it mayconaem:

Be it known that I JOHN A. Toomsnr, a citizen of the United tates, and a resident of Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Internal-Combustion Engines,- of which the. following is a full, clear, and exact specification. V My invention relates to two cycle engines and to novel means for scavenging and carbureting' the same, so as to separate theseoperations and have them follow each other in the c cle.

The invention preferably applies to en-' es having four or a multiple of {our cyl--- m'ders, and with cylinders having pistons of two diameters, one working the explos on chamber and e other an air comp-1m chariihe'r, but the-invention may appl e' to other designs of en es withoutdepartin from the claims 0 inyention.

' the accompan ing timwmg F1} 1 is a diagmmrnatlcal drawing of anexp os on engine, and shows the relati n and position of the various'jlijar'ts of invention.

Fig. 2 is a an new era-four cylinder Cyliii' H l aii' passages and 3 and 4 the carbuair passages, with valves and connecti t --1 v j I z. A!

numbers refer to Parts in here hatter lindei' A a p H me has the inlet j' er fiefieir or whit are t'yi the fiist'onme -eaters r r 'ier inithe air e fi: f

Specification 0! Letters Patent.

ers 1 and '2 show i g the scavto tteartwit is t an 1 ,tttcx ta s...

' airin the Patented Dec. 18-, 1917.

Application filed November a, 1915. semind. 59,214.

Cylinders 1 and 2. are paired and have their cranks set at an angle of 180-,degrees.

The air compression space,8 of cylinder 1 a is connected with the explosion space 7 of a cylinder 2 by the air conduit 15. In like manner cylinder 2 is connected with cylinder 1, by the conduit 14.

Cylinders 3 and 4 are paired, similar to 1 and 2, the air conduits being indicated by the dotted line 16.

" The compression space8 of each cylinder has an air connection -17 intoan air conduit 18, said space 8 of. each c linder being closed against back pressure mm adjoining'cylinders by a check valve 19. The conduit 18 is common to ,all. of-the cylinders and conveys the air through the throttle 20 for control, and then" through the carbureter 21 into the; manifold 22 where it is distribt0 the various cylinders, enterin the ex losion space 7 through the {501112 0 each cy inder. l

. an angle of 90 degrees with the cranks of 3 and r j I If he p'ston" P" shown in Fig; 1 be considered as istoii 1, the relative pfi ition' 01f Pisten 2' ndicated-by the; dotted lines, 22 and of 3 and by the dottedline 23. This, toget-her with. the p tyioug. described constfiiction,

b? 95. fi it har 9 m s t s "1 a g esters the port 1.1 and the "d air iii siss e 8 h r'dug the. coririetii g plesioiig spac of itasstgeligt into d f 1., and

1 new uncover will assfreiii the c lia "toug' in' a sup ly of $11" The cranks of cylinders and 2 are atgives e fellows": cycle. the

depor 10 scavenging, t of can hntilfihd l e 19; the-tit e throttle. 2,0, the carburet ei- "1 :1,

ei (I; and (explosion j ndei 4 iston stroke an 5 3 theatvery rich 8 regulates the pressure of the air used for scavenging thecylinders.

The .carburation of this engine differs from others in that it is effected by pumping air through the carbureter instead of drawing air t rough 'by suction. Various forms of mixing devices may be used. 1 prefer and have shown what is known as a puddle carbureter, which consists of bowl 30 divided by the wall 31. Gasolene enters the bowl 30 through the opening 32, the

flow being regulated by the set screw 33 and the height 36 regulated by the float 34 and valve 35.

The air enters the carbureter from the throttle 20 and is forced downward bythe wall 31 against the puddle 36 of gasolene in the bottom of the bowl, spraylng and breaking it up and carries with it avportion of the gasolene into the cylinders.

Gasolene is supplied the carbureter by the tank 40, through the piping 42," and as 1t must feed against a pressure of air, the air conduit 18 is connected with the tank 40, by the piping 41, equalizing the pressure in both. A check valve 45 is placed in the pi ingv 41 to provide. an even pressure in t e tank 40 as the pressure varies in the carbureter as each cylinder is charged.- Advantage may be taken of'this variation in pressure to feed the gasolenefrom than the carbureter if desired.

I claim: t

1. The combination in an explosive engin'e, of a plurality of cylindersJ-each having 7 'two diameters, and each having'a work ng piston with similar diameters reciprocating therein, one diameter of the piston working the explosion chamber, the other diameter workingin an air compression chamber, said explosion chambgr having anexhaust port, a port for scavenging air, and a port for carbureted air, said ports designed to be opened successively, by the downward movement of the piston, an'd to be closed in a reverse order by the upward movement of the piston, said compression chamber havinga valve forthe-suctmmof air into the chamber, and an'air outlet lnto an air con-.

duit, an air conduit, a 'man'ifold, said air conduit connecting the compression spaces air. from the conduit, said ai17-condu1t do} provide a series of'cylinders whose suction a lower level signed to convey air from all the compres slon cylinders into the manifold, said manifold common to all the explosion cylinders and designed to distribute said air to the carbureted air ports of each cylinder, a 79 throttle in said air conduit, means for oper- Y ating the throttle to regulate the. quantity of air, a carbureter forming part-of said air conduit, designed to carburet all air passing through it, said air conduit, throttle, carbureter and manifold and their connections designed to retain air under pressure, said plurality of cylinders being designed in pairs, and the compression space of each cylinder, having an air connection, with the explosion space of the paired cylinder, through the scaven ing air port of said cylinder, a crank s aft, said crank shaft having the cranks set at suitable angles to and compression will coincide with and provide air or scavenging and carbureting each cylinderin turn, a tank for storing an explosive element, means for equalizing the pressure in the tank air conduit and carbureter, means for conveying said explosive element; into the carbureter to carburet the air passing into the explosion chamber, means for controlling the flow of said explosive element into the carbureter, means'for exploding said carbureted air in the explosion chainberand a connecting rod for applyin the forceof... said explosion to the cran v shaft of the engine, substantially as described.

2-. In an explosion engine, an air conduitforgconveging'jcompressed air from ,a com-' pression c amber into the explosion chamber and a carbureter for carbureting saidair, a fuel suppl tank, a float to'control the flow 1 of fuel to t e carbureter, and a means'for equalizing the air pressure in the carbureter, fuel supply tank and air conduit, substantiallyas described. 3. InQan explosive engine, the combination of two or more pairs of cylinders, each cylinder havin an explosion chamber and a. an air compression chamber, a piston in each cylinder working in both ch'am ers, each explosion chamber having an exhaust outlet and an inlet for scavenging air and air inlet for carbureted air, all controlled b the piston movement, said pairs of c lmders aving the compression space ,of eac c linder connected with the scavenging air inlet throu h the descri means for controllin the passage of air air con uit, substantially as 4. In an internal combustion engine having compression cylinders and explosion cylinders, pression cylinders and explosion cylinders, a trap explosive element, a wall in'said trap to defleet the air against said explosive element, a reservoir for said explosive element surrounding and part of said trap, an opening in the bottom of the trap into. the reser- ..vo1r for admission of gasolene, a needle valve to regulate said opening,a flo at conthe explosive an air conduit between said .com-f formed in said conduit to hold antrolled mechanism'to regulate the height of element in the reservoir and trap, a supply tank for said explosive element connecting with said reservoir to suply t e ex losive element, an air connection tween t e air conduit and said tank to each, a check I and a throttle 

